Which statement is true about the two stars labeled in this diagram?
Star A
Star B
This is an elliptical galaxy and Star A is older than Star B.
This is a spiral galaxy and Star A is older than Star B.
This is a spiral galaxy and Star B is older than Star A.
What is the answer?

the arctic is a region of the planet, north of the arctic circle, and includes the arctic ocean, greenland, baffin island, other smaller northern islands, and the far northern parts of europe, russia (siberia), alaska and canada.

waves moving from a fast medium to a slow medium will experience a reflection as light travels more slowly than red light. total internal reflection occurs when the critical angle is.

answera compound;